The bar chart shows the weight of the same 5.0 kg toolbox on four different planets. On which planet is the gravitational field strength approximately 6 N/k...
Question 1 Report
The bar chart shows the weight of the same 5.0 kg toolbox on four different planets.
On which planet is the gravitational field strength approximately 6 N/kg?
Answer Details
Gravitational field strength g relates weight W to mass m through the equation W = m × g. Rearranging gives g = W / m. Since the toolbox has a mass of 5.0 kg on every planet (mass does not change with location), the gravitational field strength on each planet equals the bar-chart weight divided by 5.0 kg.
Reading the bar chart: Earth shows a weight of about 50 N, giving g = 50 / 5.0 = 10 N/kg. Mars shows approximately 30 N, giving g = 30 / 5.0 = 6 N/kg. Neptune shows roughly 47 N (g ≈ 9.4 N/kg) and Uranus about 40 N (g ≈ 8 N/kg). Only Mars yields a gravitational field strength of approximately 6 N/kg.
A common mistake is to confuse mass and weight or to misread the bar chart scale. Remember that the mass of an object is the same everywhere; what changes from planet to planet is the weight, because each planet has a different gravitational field strength.
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